79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include "logging.h"
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int parse_saddr(const char *addr, struct sockaddr_in *sa)
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{
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char *addr_cpy = strdup(addr);
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if (addr_cpy == NULL) {
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log_print(LOG_WARN, "parse_saddr(): out of memory");
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return -1;
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}
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char *tmp;
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char *ip = strtok_r(addr_cpy, ":", &tmp);
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if (ip == NULL) {
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free(addr_cpy);
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return -1;
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}
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char *port = strtok_r(NULL, ":", &tmp);
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if (port == NULL) {
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free(addr_cpy);
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return -1;
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}
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sa->sin_family = AF_INET;
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sa->sin_port = htons(atoi(port));
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int ret = inet_aton(ip, &sa->sin_addr);
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free(addr_cpy);
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return (ret != 0) ? 0 : -1;
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}
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int get_sockaddr(struct sockaddr_in *sa, char *buf, int size)
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{
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return snprintf(buf, size, "%s:%d", inet_ntoa(sa->sin_addr), ntohs(sa->sin_port));
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}
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char * get_sockaddr_buf(struct sockaddr_in *sa)
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{
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static char buf[24];
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get_sockaddr(sa, buf, sizeof(buf));
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return buf;
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}
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int tcp_listen_socket(struct sockaddr_in *sa, int cnt)
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{
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int sock = socket(AF_INET, SOCK_STREAM, 0);
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if (sock < 0 ) {
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log_print(LOG_ERROR, "tcp_listen_socket(): socket()");
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return -1;
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}
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int i = 1;
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if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i))) {
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log_print(LOG_ERROR, "tcp_listen_socket(): setsockopt(SO_REUSEADDR)");
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close(sock);
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return -1;
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}
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if (bind(sock, (struct sockaddr *)sa, sizeof(*sa))) {
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log_print(LOG_ERROR, "tcp_listen_socket(): bind(%s)", get_sockaddr_buf(sa));
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close(sock);
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return -1;
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}
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if (listen(sock, cnt)) {
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log_print(LOG_ERROR, "tcp_listen_socket(): listen()");
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close(sock);
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return -1;
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}
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return sock;
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}
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